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WO2019127413A1 - Radiomessagerie dans un réseau de communication - Google Patents

Radiomessagerie dans un réseau de communication Download PDF

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Publication number
WO2019127413A1
WO2019127413A1 PCT/CN2017/119968 CN2017119968W WO2019127413A1 WO 2019127413 A1 WO2019127413 A1 WO 2019127413A1 CN 2017119968 W CN2017119968 W CN 2017119968W WO 2019127413 A1 WO2019127413 A1 WO 2019127413A1
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WIPO (PCT)
Prior art keywords
terminal device
paging
network node
mobility information
response
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/119968
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English (en)
Inventor
Bo Yang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Priority to PCT/CN2017/119968 priority Critical patent/WO2019127413A1/fr
Priority to EP17936401.3A priority patent/EP3603240A4/fr
Priority to US16/611,391 priority patent/US11277813B2/en
Publication of WO2019127413A1 publication Critical patent/WO2019127413A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/005—Transmission of information for alerting of incoming communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/04—User notification, e.g. alerting and paging, for incoming communication, change of service or the like multi-step notification using statistical or historical mobility data
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure generally relates to communication networks, and more specifically, to paging in a communication network.
  • a cellular mobile network such as evolved universal terrestrial radio access network (EUTRAN) and global system for mobile communication (GSM) enhanced data rate for GSM evolution radio access network (GERAN)
  • EUTRAN evolved universal terrestrial radio access network
  • GSM global system for mobile communication
  • GERAN global system for mobile communication
  • a terminal device or user equipment (UE) such as an IoT device may communicate with a peer end or an application server.
  • a paging message may be initiated for this IoT device from the core network (CN) , in a similar way as to reach a handset.
  • CN core network
  • paging overload due to an increased number of terminal devices may affect network performance and user experience.
  • a communication network such as a cellular mobile network is providing a seamless roaming, bi-directional connection services to these devices, sensors, or indoor applications.
  • IoT devices growth, the paging load of the communication network will increase accordingly, which poses a potential challenge for the whole network capacity and performance.
  • the present disclosure proposes a solution of paging in a communication network, which may enable terminal devices to be paged differentially based at least in part on respective mobility information of the terminal devices, so as to improve system performance and energy efficiency of the communication network.
  • a method implemented at a core network node may comprise receiving mobility information of a terminal device from an access network node serving the terminal device.
  • the method may further comprise determining a paging policy for the terminal device according to the mobility information.
  • the determined paging policy may indicate that a paging area for the terminal device comprises the serving cell of the terminal device, in response to the mobility information indicating that the terminal device is stationary.
  • the method according to the first aspect of the present disclosure may further comprise sending a first request for an identifier of a serving cell of the terminal device to the access network node, and receiving a first response to the first request from the access network node to obtain the identifier of the serving cell in the first response.
  • the method according to the first aspect of the present disclosure may further comprise paging the terminal device in the serving cell, in response to a paging request for the terminal device.
  • said paging the terminal device in the serving cell may comprises transmitting a paging message for the terminal device to the access network node.
  • the paging message may comprise the identifier of the serving cell to indicate the access network node to page the terminal device in the serving cell.
  • the method according to the first aspect of the present disclosure may further comprise paging the terminal device in a tracking area to which the terminal device belongs, in response to a failure of paging the terminal device in the serving cell.
  • the method according to the first aspect of the present disclosure may further comprise sending a second request for an identifier of a cell currently serving the terminal device to an access network node currently serving the terminal device, in response to a success of paging the terminal device in the tracking area.
  • the method according to the first aspect of the present disclosure may further comprise receiving a second response to the second request from the access network node currently serving the terminal device, so as to obtain the identifier of the cell currently serving the terminal device in the second response.
  • the method according to the first aspect of the present disclosure may further comprise determining whether to update a record of a current serving cell of the terminal device at the core network node, based at least in part on the obtained identifier.
  • the determined paging policy may indicate that a paging area for the terminal device comprises a tracking area to which the terminal device belongs, in response to the mobility information indicating that the terminal device is movable.
  • the method according to the first aspect of the present disclosure may further comprise paging the terminal device in the tracking area, in response to a paging request for the terminal device.
  • an apparatus may comprise one or more processors and one or more memories comprising computer program codes.
  • the one or more memories and the computer program codes may be configured to, with the one or more processors, cause the apparatus at least to perform any step of the method according to the first aspect of the present disclosure.
  • a computer-readable medium having computer program codes embodied thereon which, when executed on a computer, cause the computer to perform any step of the method according to the first aspect of the present disclosure.
  • an apparatus may comprise a receiving unit and a determining unit.
  • the receiving unit may be operable to carry out at least the receiving step of the method according to the first aspect of the present disclosure.
  • the determining unit may be operable to carry out at least the determining step of the method according to the first aspect of the present disclosure.
  • a method implemented at a terminal device may comprise determining mobility information of the terminal device.
  • the method may further comprise providing the mobility information to a core network node for determination of a paging policy for the terminal device, through an access network node serving the terminal device.
  • the mobility information may indicate that the terminal device is stationary.
  • the paging policy may indicate that a paging area for the terminal device comprises a serving cell of the terminal device.
  • the mobility information may indicate that the terminal device is movable.
  • the paging policy may indicate that a paging area for the terminal device comprises a tracking area to which the terminal device belongs.
  • an apparatus may comprise one or more processors and one or more memories comprising computer program codes.
  • the one or more memories and the computer program codes may be configured to, with the one or more processors, cause the apparatus at least to perform any step of the method according to the fifth aspect of the present disclosure.
  • a computer-readable medium having computer program codes embodied thereon which, when executed on a computer, cause the computer to perform any step of the method according to the fifth aspect of the present disclosure.
  • an apparatus may comprise a determining unit and a providing unit.
  • the determining unit may be operable to carry out at least the determining step of the method according to the fifth aspect of the present disclosure.
  • the providing unit may be operable to carry out at least the providing step of the method according to the fifth aspect of the present disclosure.
  • a method implemented at an access network node may comprise receiving mobility information of a terminal device from the terminal device served by the access network node.
  • the method may further comprise forwarding the mobility information to a core network node for determination of a paging policy for the terminal device.
  • the method according to the ninth aspect of the present disclosure may further comprise receiving a first request for an identifier of a serving cell of the terminal device from the core network node, in response to the mobility information indicating that the terminal device is stationary.
  • the method according to the ninth aspect of the present disclosure may further comprise transmitting a first response to the first request to the core network node.
  • the first response may comprise the identifier of the serving cell.
  • the method according to the ninth aspect of the present disclosure may further comprise receiving a paging message for the terminal device from the core network node.
  • the paging message may comprise the identifier of the serving cell.
  • the access network node may page the terminal device in the serving cell.
  • the method according to the ninth aspect of the present disclosure may further comprise receiving another paging message for the terminal device from the core network node, in response to a failure of paging the terminal device in the serving cell.
  • the access network node may page the terminal device in all cells pertaining to the access network node.
  • the access network node may receive a second request for an identifier of a cell currently serving the terminal device from the core network node, in response to a success of paging the terminal device in the cell pertaining to the access network node.
  • the access network node may transmit a second response to the second request to the core network node.
  • the second response may comprise the identifier of the cell currently serving the terminal device.
  • an apparatus may comprise one or more processors and one or more memories comprising computer program codes.
  • the one or more memories and the computer program codes may be configured to, with the one or more processors, cause the apparatus at least to perform any step of the method according to the ninth aspect of the present disclosure.
  • a computer-readable medium having computer program codes embodied thereon which, when executed on a computer, cause the computer to perform any step of the method according to the ninth aspect of the present disclosure.
  • an apparatus may comprise a receiving unit and a forwarding unit.
  • the receiving unit may be operable to carry out at least the receiving step of the method according to the ninth aspect of the present disclosure.
  • the forwarding unit may be operable to carry out at least the forwarding step of the method according to the ninth aspect of the present disclosure.
  • Fig. 1 is a diagram illustrating an exemplary paging procedure according to some embodiments of the present disclosure
  • Fig. 2 is a flowchart illustrating a method according to some embodiments of the present disclosure
  • Fig. 3 is a flowchart illustrating a method according to some embodiments of the present disclosure
  • Fig. 4 is a flowchart illustrating a method according to some embodiments of the present disclosure.
  • Fig. 5 is a block diagram illustrating an apparatus according to some embodiments of the present disclosure.
  • Fig. 6 is a block diagram illustrating an apparatus according to some embodiments of the present disclosure.
  • Fig. 7 is a block diagram illustrating another apparatus according to some embodiments of the present disclosure.
  • Fig. 8 is a block diagram illustrating yet another apparatus according to some embodiments of the present disclosure.
  • the term “communication network” refers to a network following any suitable communication standards, such as new radio (NR) , long term evolution (LTE) , LTE-Advanced, wideband code division multiple access (WCDMA) , high-speed packet access (HSPA) , and so on.
  • NR new radio
  • LTE long term evolution
  • WCDMA wideband code division multiple access
  • HSPA high-speed packet access
  • the communications between a terminal device and a network node in the communication network may be performed according to any suitable generation communication protocols, including, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , 4G, 4.5G, 5G communication protocols, and/or any other protocols either currently known or to be developed in the future.
  • the term “network node” refers to a network device in a communication network via which a terminal device accesses to the network and receives services therefrom.
  • the network node may refer to a base station (BS) , an access point (AP) , a multi-cell/multicast coordination entity (MCE) , a controller or any other suitable device in a wireless communication network.
  • BS base station
  • AP access point
  • MCE multi-cell/multicast coordination entity
  • the BS may be, for example, a node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a next generation NodeB (gNodeB or gNB) , a remote radio unit (RRU) , a radio header (RH) , a remote radio head (RRH) , a relay, a low power node such as a femto, a pico, and so forth.
  • NodeB or NB node B
  • eNodeB or eNB evolved NodeB
  • gNodeB or gNB next generation NodeB
  • RRU remote radio unit
  • RH radio header
  • RRH remote radio head
  • relay a low power node such as a femto, a pico, and so forth.
  • the network node comprise multi-standard radio (MSR) radio equipment such as MSR BSs, network controllers such as radio network controllers (RNCs) or base station controllers (BSCs) , base transceiver stations (BTSs) , transmission points, transmission nodes, positioning nodes and/or the like. More generally, however, the network node may represent any suitable device (or group of devices) capable, configured, arranged, and/or operable to enable and/or provide a terminal device access to a wireless communication network or to provide some service to a terminal device that has accessed to the wireless communication network.
  • MSR multi-standard radio
  • RNCs radio network controllers
  • BSCs base station controllers
  • BTSs base transceiver stations
  • transmission points transmission nodes
  • positioning nodes positioning nodes and/or the like.
  • the network node may represent any suitable device (or group of devices) capable, configured, arranged, and/or operable to enable and/or provide a terminal device access to a wireless communication network or to provide
  • terminal device refers to any end device that can access a communication network and receive services therefrom.
  • the terminal device may refer to a mobile terminal, a user equipment (UE) , or other suitable devices.
  • the UE may be, for example, a subscriber station, a portable subscriber station, a mobile station (MS) or an access terminal (AT) .
  • the terminal device may include, but not limited to, portable computers, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback appliances, a mobile phone, a cellular phone, a smart phone, a tablet, a wearable device, a personal digital assistant (PDA) , a vehicle, and the like.
  • PDA personal digital assistant
  • a terminal device may also be called an IoT device and represent a machine or other device that performs monitoring, sensing and/or measurements etc., and transmits the results of such monitoring, sensing and/or measurements etc. to another terminal device and/or a network equipment.
  • the terminal device may in this case be a machine-to-machine (M2M) device, which may in a 3GPP context be referred to as a machine-type communication (MTC) device.
  • M2M machine-to-machine
  • MTC machine-type communication
  • the terminal device may be a UE implementing the 3GPP narrow band internet of things (NB-IoT) standard.
  • NB-IoT 3GPP narrow band internet of things
  • machines or devices are sensors, metering devices such as power meters, industrial machinery, or home or personal appliances, e.g. refrigerators, televisions, personal wearables such as watches etc.
  • a terminal device may represent a vehicle or other equipment, for example, a medical instrument that is capable of monitoring, sensing and/or reporting etc. on its operational status or other functions associated with its operation.
  • the terms “first” , “second” and so forth refer to different elements.
  • the singular forms “a” and “an” are intended to include the plural forms as well, unless the context clearly indicates otherwise.
  • the term “based on” is to be read as “based at least in part on” .
  • the term “one embodiment” and “an embodiment” are to be read as “at least one embodiment” .
  • the term “another embodiment” is to be read as “at least one other embodiment” .
  • Other definitions, explicit and implicit, may be included below.
  • IoT is a new radio technology which may be able to provide extended coverage for harsh environments such as basements, and is designed to serve a number of UEs using limited resources.
  • a paging message may be transmitted for this UE from the CN.
  • Paging capacity of a communication network is a crucial part in network capacity dimensioning, and the paging storm could paralyze a network if it were not designed appropriately.
  • the paging load in radio interface and CN entities may be reduced with assistance of radio access network (RAN) entities such as eNB.
  • RAN radio access network
  • the RAN entities may send a list of recommended cells to the CN for paging of a UE in idle mode.
  • the recommended cells in the list consist of the UE’s serving cells in connected mode and its neighbor cells which are tracked and recorded by the RAN entities.
  • the CN may use such information to send paging messages to the list of recommended cells.
  • the idea of the above paging scheme is to request the eNB to record most of the cells which ever registered or served the UE, and then send a list of cells to the CN as the paging candidates. Therefore, the complexity of this scheme is high as it needs to track and forward the UE’s serving and neighbor cells data which may be associated with multiple RAN entities and procedures such as radio access bearer (RAB) management and handover. This consequently increases RAN processing load for UEs in connected mode.
  • RAB radio access bearer
  • the idea of the above paging scheme is using the UE’s history information in connected mode as a paging reference for idle mode, which may pose a risk of degraded paging efficiency and success rate.
  • IoT devices may have different motion characteristics such as ‘movable’ or ‘stationary’ .
  • a stationary IoT device like a monitor or an automatic vending machine may be located at a specific cell.
  • a paging message for this device could be sent to just that cell rather than all cells in a tracking area which this device belongs to.
  • differentiated paging policies may be applied for various UEs/IoT devices with different motion characteristics.
  • the present disclosure provides a paging solution to enable a core network node, for example, a Mobility Management Entity (MME) , an Access and Mobility Management Function (AMF) , etc., to configure differentiated paging policies based at least in part on mobility information of UEs.
  • MME Mobility Management Entity
  • AMF Access and Mobility Management Function
  • the proposed paging solution according to some exemplary embodiments may be assisted by UEs. This UE assisted paging solution would not introduce high processing load on RAN entities, and may be much simpler to implement in a core network node.
  • a UE such as an IoT device may notify a core network node whether it is stationary, for example, in a non-access stratum (NAS) message when registering to the core network node. Accordingly, the core network node may send a paging message just to the UE’s serving cell through an access network node such as an eNB/gNB, in the case that the UE is a stationary device.
  • NAS non-access stratum
  • the proposed paging solution can achieve power saving for both stationary and mobile terminal devices.
  • each of terminal devices in the same paging group may need to read and decode the paging channel (PCH) frame to check whether there is a paging message for the terminal device. This may make a negative impact on power consumption of the terminal device.
  • PCH paging channel
  • Fig. 1 is a diagram illustrating an exemplary paging procedure according to some embodiments of the present disclosure.
  • Fig. 1 only depicts some exemplary network elements such as a UE 101, an eNB/gNB 102 and a MME/AMF 103.
  • signaling messages and network elements in Fig. 1 are just shown as examples, and more or less alternative signaling messages and network elements may be involved in the paging procedure applicable to a communication network.
  • the UE 101 may have a set of characteristics and properties, such as supported codecs and encryption algorithms, vehicle-to-everything (V2X) communication over PC5 capability, or device properties.
  • V2X vehicle-to-everything
  • Such information of the UE 101 may be transferred to the MME/AMF 103 transparently through the eNB/gNB 102, for example, in a non-access stratum (NAS) message.
  • NAS non-access stratum
  • mobility information like motion characteristics of the UE 101 also may be added into the NAS message, for example, when the UE 101 registers 111 to the network in an attach procedure, as shown in Fig. 1.
  • the mobility information of the UE 101 can inform the MME/AMF 103 of whether the UE 101 is movable or not.
  • a parameter of 1-bit size may be used to represent the mobility information of the UE 101 in the NAS message which may be transparent to the eNB/gNB 102. Then, the MME/AMF 103 can store this parameter and optionally some other characteristics of the UE 101 for further usage.
  • the MME/AMF 103 may invoke a location report procedure to get serving cell information for the UE 101.
  • the MME/AMF 103 may send 112 a location reporting control message to the eNB/gNB 102 to request the serving cell information for the UE 101, as shown in Fig. 1.
  • the eNB/gNB 102 may send 113 the requested serving cell information to the MME/AMF 103, for example, in a location report message.
  • the MME/AMF 103 may store 114 the serving cell information such as a cell identifier (ID) of the UE 101 for further paging usage.
  • ID cell identifier
  • the MME/AMF 103 may be invoked to page the UE 101 to setup a connection with the UE 101.
  • the MME/AMF 103 may check the mobility information of the UE 101. If the UE 101 is movable, the MME/AMF 103 may send 116 a paging message for the UE 101 to all cells in a tracking area where this UE belongs.
  • the tracking area may be defined as a free-moving area where the UE does not need to update its service, and usually consist of hundreds of cells.
  • the tracking area may be used for paging and location update management according to network configurations.
  • the CN can know the tracking area where the UE belongs.
  • the tracking area may be specified in accordance with a cell-level configuration. Multiple cells may be configured in the same tracking area, and a cell belongs to a specific tracking area.
  • the MME/AMF 103 may initiate the paging of the UE 101 in a specific cell where the UE 101 is located, i.e. the serving cell of this UE.
  • This specific cell may be identified by the serving cell ID stored for the UE 101 at the MME/AMF 103.
  • the MME/AMF 103 may send 116 a paging message to the eNB/gNB 102 with the serving cell ID of the UE 101, so as to indicate the eNB/gNB 102 to page 117 the UE 101 in the identified serving cell.
  • the eNB/gNB 102 may broadcast a paging message in the identified serving cell of the UE 101.
  • the MME/AMF 103 may begin to page the UE 101 in all cells in the tracking area where the UE 101 belongs and which the UE 101 registered in the MME/AMF 103.
  • N may be predetermined by the network operator based on the network traffic load or any other proper rules
  • the MME/AMF 103 may end the paging of the UE. This may be usually caused by power outage or radio frequency (RF) problems, and the paging may succeed again after these problems are fixed.
  • RF radio frequency
  • the MME/AMF 103 may fetch the current serving cell ID of the UE 101 from the current serving eNB/gNB of the UE 101, for example, by performing a location report procedure.
  • the current serving eNB/gNB of the UE 101 may be the eNB/gNB 102 or another eNB/gNB in the tracking area of the UE 101.
  • the current serving cell ID of the UE 101 is different from the cell ID previously stored for the UE 101 by the MME/AMF 103. In this case, the serving cell information stored for the UE 101 may need to be updated with the current serving cell ID of the UE 101.
  • the serving cell information of the UE may not need to be updated usually due to the UE’s stationary nature, there may be certain cases where the serving cell of the UE changes. For instance, when the UE such as an IoT device is dismantled and moved to a new place and/or the radio access network for the UE is reconfigured, a serving cell update procedure may be performed to keep the serving cell information of the UE up to date in the MME/AMF.
  • the MME/AMF may fetch the current serving cell ID of the UE by a location report procedure. If the fetched ID is different from the stored cell ID, then the MME/AMF may update the stored cell ID with the fetched ID.
  • Fig. 2 is a flowchart illustrating a method 200 according to some embodiments of the present disclosure.
  • the method 200 illustrated in Fig. 2 may be performed by an apparatus implemented in a core network node or communicatively coupled to a core network node.
  • the core network node may comprise a MME, an AMF or any other network device being capable of initiating a paging procedure in a communication network.
  • the core network node may receive mobility information of a terminal device (such as the UE 101) from an access network node (such as the eNB/gNB 102) serving the terminal device, as shown in block 202.
  • the mobility information may comprise motion characteristics of the terminal device.
  • the core network node may receive the mobility information of the terminal device in a NAS message, for example, when the terminal device registers to the core network node.
  • the core network node can determine a paging policy for the terminal device according to the mobility information, as shown in block 204.
  • the mobility information may indicate that the terminal device is stationary or movable.
  • the stationary terminal device and the mobile terminal device usually have different motion characteristics and manner of utilizing network resources.
  • differentiated paging policies may be configured or determined for different types of terminal devices.
  • the core network node in response to a paging request for the terminal device, can page the terminal device according to the determined paging policy, as shown in block 206.
  • the core network node in response to the mobility information indicating that the terminal device is stationary, may send a first request for an identifier of a serving cell of the terminal device to the access network node.
  • the core network node may receive a first response to the first request from the access network node, so as to obtain the identifier of the serving cell of the terminal device in the first response.
  • the core network node can determine whether to update a record of a current serving cell of the terminal device at the core network node. For example, if this is the first time the terminal device is registered to the core network node, the obtained identifier may be stored as the current serving cell identifier of the terminal device in the record. Alternatively, for the case where the terminal device registers again to the core network node, the obtained identifier may be stored as the current serving cell identifier of the terminal device in the record, if the previously stored identifier in the record is different from the obtained identifier.
  • the paging policy determined for the terminal device may indicate that a paging area for the terminal device comprises the serving cell of the terminal device.
  • the core network node in response to a paging request for the terminal device, the core network node can page the terminal device in the serving cell.
  • paging the terminal device in the serving cell may be performed by transmitting a paging message for the terminal device from the core network node to the access network node serving the terminal device.
  • the paging message may comprise the identifier of the serving cell of the terminal device, in order to indicate the access network node to page the terminal device in the serving cell.
  • the core network node in response to a failure of paging the terminal device in the serving cell, can page the terminal device in a tracking area to which the terminal device belongs.
  • the tracking area may comprise a predefined area for the terminal device. Multiple cells and the corresponding access network nodes may be located in the tracking area.
  • the core network node may send a paging message for the terminal device to all access network nodes in the tracking area. Then, each access network node in the tracking area may broadcast a paging message for the terminal device to all cells pertaining to this access network node.
  • the core network node may send a second request for an identifier of a cell currently serving the terminal device to an access network node currently serving the terminal device.
  • the core network node can obtain the identifier of the cell currently serving the terminal device in the second response. Based at least in part on the obtained identifier, the core network node can determine whether to update a record of a current serving cell of the terminal device. For example, if the obtained identifier is different from the previously recorded identifier, the record may be update accordingly.
  • the paging policy determined for the terminal device may indicate that a paging area for the terminal device comprises a tracking area to which the terminal device belongs. For this case, in response to a paging request for the terminal device, the core network node can page the terminal device in the tracking area of this mobile terminal device.
  • Fig. 3 is a flowchart illustrating a method 300 according to some embodiments of the present disclosure.
  • the method 300 illustrated in Fig. 3 may be performed by an apparatus implemented in a terminal device or communicatively coupled to a terminal device.
  • the terminal device may comprise a UE, a mobile station, an IoT device, a smart phone, a portable device, a MTC device, or any other user device being capable of participating in communication of a wireless network.
  • mobility information of the terminal device can be determined in block 302.
  • the terminal device may determine its mobility information by collecting information of motion characteristics (such as stationary or movable) of the terminal device.
  • the terminal device may provide the mobility information to a core network node (such as the MME/AMF 103) for determination of a paging policy for the terminal device, through an access network node (such as the eNB/gNB 102) serving the terminal device, as shown in block 304.
  • a core network node such as the MME/AMF 103
  • an access network node such as the eNB/gNB 102
  • the paging policy determined for the terminal device by the core network node may indicate that a paging area for the terminal device comprises a serving cell of the terminal device.
  • the paging policy determined for the terminal device may indicate that a paging area for the terminal device comprises a tracking area to which the terminal device belongs.
  • the paging of the terminal device may be performed according to the paging policy determined for the terminal device.
  • Fig. 4 is a flowchart illustrating a method 400 according to some embodiments of the present disclosure.
  • the method 400 illustrated in Fig. 4 may be performed by an apparatus implemented in an access network node or communicatively coupled to an access network node.
  • the access network node may comprise an eNB, a gNB, a BS, an AP, a relay station or any other network device being capable of performing a paging procedure in a communication network.
  • the access network node may receive mobility information of a terminal device (such as the UE 101) from the terminal device served by the access network node, as shown in block 402.
  • the mobility information of the terminal device may be transparent to the access network node.
  • the mobility information may be forwarded to a core network node (such as the MME/AMF 103) for determination of a paging policy for the terminal device, as shown in block 404.
  • the access network node may receive a first request for an identifier of a serving cell of the terminal device from the core network node, in response to the mobility information indicating that the terminal device is stationary. Then, the access network node may transmit a first response to the first request to the core network node.
  • the first response may comprise the identifier of the serving cell.
  • the paging policy determined for the stationary terminal device may indicate that a paging area for the terminal device comprises the serving cell of the terminal device.
  • a paging procedure may be initiated for the terminal device by the core network node.
  • the access network node may receive a paging message for the terminal device from the core network node.
  • the paging message may comprise the identifier of the serving cell of the terminal device.
  • the identified serving cell pertains to the access network node. Accordingly, the access network node can page the terminal device in this serving cell.
  • the access network node may receive another paging message for the terminal device from the core network node. This paging message may not identify any specific cell for paging the terminal device. In accordance with an exemplary embodiment, the access network node may page the terminal device in all cells pertaining to the access network node.
  • the access network node may receive a second request for an identifier of a cell currently serving the terminal device from the core network node, in response to a success of paging the terminal device in a cell pertaining to the access network node. Then, the access network node can include the identifier of the cell currently serving the terminal device in a second response to the second request, and transmit the second response to the core network node.
  • the paging of the terminal device also may be successful in a cell pertaining to another access network node in the tracking area.
  • the core network node can fetch the identifier of the cell currently serving the terminal device from the other access network node, for example, by performing a location report procedure.
  • the paging policy determined for the mobile terminal device may indicate that a paging area for the terminal device comprises a tracking area to which the terminal device belongs.
  • the access network node may receive a paging message for the terminal device from the core network node. In this case, the access network node may broadcast a paging message for the terminal device to all cells pertaining to the access network node.
  • the proposed solution according to one or more exemplary embodiments can enable differentiated paging based on different terminal motion characteristics. Taking the advantage of the proposed paging mechanism makes it possible to send a paging message for a UE to a specific cell rather than all cells in a tracking area or in a cell group. In this way, the paging capacity of a communication network may be enhanced, and radio resources may be efficiently utilized both at the network side and the terminal side.
  • Fig. 2-4 may be viewed as method steps, and/or as operations that result from operation of computer program code, and/or as a plurality of coupled logic circuit elements constructed to carry out the associated function (s) .
  • the schematic flow chart diagrams described above are generally set forth as logical flow chart diagrams. As such, the depicted order and labeled steps are indicative of specific embodiments of the presented methods. Other steps and methods may be conceived that are equivalent in function, logic, or effect to one or more steps, or portions thereof, of the illustrated methods. Additionally, the order in which a particular method occurs may or may not strictly adhere to the order of the corresponding steps shown.
  • Fig. 5 is a block diagram illustrating an apparatus 500 according to various embodiments of the present disclosure.
  • the apparatus 500 may comprise one or more processors such as processor 501 and one or more memories such as memory 502 storing computer program codes 503.
  • the memory 502 may be non-transitory machine/processor/computer readable storage medium.
  • the apparatus 500 may be implemented as an integrated circuit chip or module that can be plugged or installed into a core network node as described with respect to Fig. 2, a terminal device as described with respect to Fig. 3, or an access network node as described with respect to Fig. 4.
  • the one or more memories 502 and the computer program codes 503 may be configured to, with the one or more processors 501, cause the apparatus 500 at least to perform any operation of the method as described in connection with Fig. 2. In some implementations, the one or more memories 502 and the computer program codes 503 may be configured to, with the one or more processors 501, cause the apparatus 500 at least to perform any operation of the method as described in connection with Fig. 3. In other implementations, the one or more memories 502 and the computer program codes 503 may be configured to, with the one or more processors 501, cause the apparatus 500 at least to perform any operation of the method as described in connection with Fig. 4.
  • the one or more memories 502 and the computer program codes 503 may be configured to, with the one or more processors 501, cause the apparatus 500 at least to perform more or less operations to implement the proposed methods according to the exemplary embodiments of the present disclosure.
  • Fig. 6 is a block diagram illustrating an apparatus 600 according to some embodiments of the present disclosure.
  • the apparatus 600 may comprise a receiving unit 601 and a determining unit 602.
  • the apparatus 600 may be implemented at a core network node such as a MME or an AMF.
  • the receiving unit 601 may be operable to carry out the operation in block 202
  • the determining unit 602 may be operable to carry out the operation in block 204.
  • the receiving unit 601 and/or the determining unit 602 may be operable to carry out more or less operations to implement the proposed methods according to the exemplary embodiments of the present disclosure.
  • Fig. 7 is a block diagram illustrating an apparatus 700 according to some embodiments of the present disclosure.
  • the apparatus 700 may comprise a determining unit 701 and a providing unit 702.
  • the apparatus 700 may be implemented at a terminal device such as a UE.
  • the determining unit 701 may be operable to carry out the operation in block 302
  • the providing unit 702 may be operable to carry out the operation in block 304.
  • the determining unit 701 and/or the providing unit 702 may be operable to carry out more or less operations to implement the proposed methods according to the exemplary embodiments of the present disclosure.
  • Fig. 8 is a block diagram illustrating an apparatus 800 according to some embodiments of the present disclosure.
  • the apparatus 800 may comprise a receiving unit 801 and a forwarding unit 802.
  • the apparatus 800 may be implemented at an access network node such as an eNB or a gNB.
  • the receiving unit 801 may be operable to carry out the operation in block 402
  • the forwarding unit 802 may be operable to carry out the operation in block 404.
  • the receiving unit 801 and/or the forwarding unit 802 may be operable to carry out more or less operations to implement the proposed methods according to the exemplary embodiments of the present disclosure.
  • the various exemplary embodiments may be implemented in hardware or special purpose chips, circuits, software, logic or any combination thereof.
  • some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device, although the disclosure is not limited thereto.
  • firmware or software which may be executed by a controller, microprocessor or other computing device, although the disclosure is not limited thereto.
  • While various aspects of the exemplary embodiments of this disclosure may be illustrated and described as block diagrams, flow charts, or using some other pictorial representation, it is well understood that these blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
  • the exemplary embodiments of the disclosure may be practiced in various components such as integrated circuit chips and modules. It should thus be appreciated that the exemplary embodiments of this disclosure may be realized in an apparatus that is embodied as an integrated circuit, where the integrated circuit may comprise circuitry (as well as possibly firmware) for embodying at least one or more of a data processor, a digital signal processor, baseband circuitry and radio frequency circuitry that are configurable so as to operate in accordance with the exemplary embodiments of this disclosure.
  • exemplary embodiments of the disclosure may be embodied in computer-executable instructions, such as in one or more program modules, executed by one or more computers or other devices.
  • program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types when executed by a processor in a computer or other device.
  • the computer executable instructions may be stored on a computer readable medium such as a hard disk, optical disk, removable storage media, solid state memory, random access memory (RAM) , etc.
  • RAM random access memory
  • the function of the program modules may be combined or distributed as desired in various embodiments.
  • the function may be embodied in whole or partly in firmware or hardware equivalents such as integrated circuits, field programmable gate arrays (FPGA) , and the like.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne, dans divers modes de réalisation, un procédé de radiomessagerie dans un réseau de communication. Le procédé consiste à recevoir des informations de mobilité d'un dispositif terminal, par un noeud de réseau central, à partir d'un noeud de réseau d'accès desservant le dispositif terminal. Le procédé consiste en outre à déterminer, en fonction des informations de mobilité, une politique de radiomessagerie pour le dispositif terminal par le noeud de réseau central. Selon les modes de réalisation de l'invention, un dispositif terminal peut recevoir un radiomessage de manière différentielle sur la base, au moins en partie, d'informations de mobilité du dispositif terminal, de façon à améliorer les performances du système et l'efficacité énergétique du réseau de communication.
PCT/CN2017/119968 2017-12-29 2017-12-29 Radiomessagerie dans un réseau de communication Ceased WO2019127413A1 (fr)

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PCT/CN2017/119968 WO2019127413A1 (fr) 2017-12-29 2017-12-29 Radiomessagerie dans un réseau de communication
EP17936401.3A EP3603240A4 (fr) 2017-12-29 2017-12-29 Radiomessagerie dans un réseau de communication
US16/611,391 US11277813B2 (en) 2017-12-29 2017-12-29 Paging in a communication network

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EP3603240A4 (fr) 2020-10-28
US11277813B2 (en) 2022-03-15
US20200205121A1 (en) 2020-06-25

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